U$.$S$.$ Customs and Border Protection $($CBP$)$ conducts border searches of electronic devices for a very small percentage of inbound and outbound travelers. The need for border searches of electronic devices is driven by CBP$\text{'}$s mission to protect the American people and enforce the nation's laws in this digital age. CBP border searches of electronic devices have resulted in evidence helpful in combating terrorist activity, child pornography, violations of export controls, intellectual property rights violations, and visa fraud.

From the information given above, it can be validly concluded that

A$)$ terrorist activity is a type of crime that has been combated through the use of border searches of electronic devices

B$)$ enforcement actions other than border searches of electronic devices have, without any exceptions, yielded evidence that has been helpful in combating crimes

C$)$ the only CBP actions that have yielded helpful evidence for fighting crime have consisted of border searches of electronic devices

D$)$ border searches of electronic devices have yielded evidence helpful in fighting a very small percentage of crimes

E$)$ enforcement actions cannot be both border searches of electronic devices and sources of evidence that is helpful in fighting crimes